Venta-sonic VS 205 ultrasonic humidifier: i use R.O. water so as not to clog with minerals from our well water. now, after 3 years of cleaning and use.... i have a black ? mold? in the humidifier and tank. i cleaned it as best i can but can't get into the tank or insides of humidifier. ? what can i do ? the directions say not to use anything but water
Humidifiers - Venta - Sonic Vs205 Cool And Warm Mist Ultrasonic Room Humidifier